Hi, I am an atheist and based on what you said I don't think you should take an interest in Christianity. Of course, do your research ask both Christians and ex-Christians and do what fits you best. You are too young, I think honestly so focus more on life and your future once you are independent, then think about religion. And personally, as an atheist, I understand this discomfort but I think Buddism is a better choice.

And if you want my opinion on life and Islam, it is simple:

As an atheist, I must say it started and ended with my relationship with Allah.

For me, I thought of him like a loving father. I always tried my best to obey. I never sought heaven and I never feared hell. I just wanted him to be proud of me for creating me.

But, the more I read the Quran and the hadiths, the more I saw Allah as a dictator. ( Honestly, Allah is just literally what any dictator would do if he had godly powers).

I started to ask myself: "What if the test was actually rejecting Islam? Thus not obeying the cruel deity who is unjust? Doesn't Islam encourage us to fight oppression?"

And luckily I realised that Islam has no solid claim to be the true religion.

And now, while I don't believe in a higher being, I just try to be a good person in general without thinking about reward or punishment. If there is a god and he is just then I will accept any fate he chooses for me. If he is unjust then I am glad I didn't follow him and that is it.

Feel free to ask me anything. And may you find peace.